Adolphus john ltjstig



(No Model.)

A. J. L.USTIG. MOLD FOR CASTING GOMPOUND INGOTS.

Patented Nov. l9, 1886.

WITN E5 EEE N. Ptrms. Phawmnognpnar, wamingnm o. u

. UNITED STATES PATENT Orricn.

ADOLPHUS JOHN LUSTIG, OF NEV YORK, N. Y., ASSIGNOB OF ONE-FIFTH TO LOUIS KAHN, OF SAME PLACE.

MOLD FOR CASTING COIVIPOUND INGOTS.

SPECIFICATION forming part of Letters Patent No. 352,476, dated November 9, 1886.

Application and March es, ieee. serial No. 196,213. (No m'oaci.)

To all whom t may concern:

Be it known that l, ADoLPHUs J oHN Lus- TIG, of the city of New York, county and State of New York, have invented a new and Improved Mold for Producing Compound Metal Plates, of which the following specification is a full, clear, and exact description.

This invention relates to a mold for producing compound metal plates consisting of graded and ungraded metals; and it consists of the various elements hereinafter described. In the accompanying drawings, Figure lis a perspective view of the complete mold. Fig. 2 is a perspective view of the mold removed from the base-plate, and part of the front plate removed. Fig.'3 is a perspective View of the base-plate. Fig. 4 is a crosssection of the A saine at line y y, Fig. 3. Fig. 5 is a vertical section at linear x, Fig. l. Fig. 6 is a horizontal section at line z e, Fig. l; and Fig. 7 is a perspective view of a bar placed upon the graded metal.

The mold A consists of the back plate, a, and

side plates b b, with internal side plates, b b,

some distance from the side plates b b, Aand closed by a front plate, c. Inside of the front plate, c, there is a wrought-iron sheet, f, between which and the front plate, c, asbestus m is arranged. This front plate, o, and Wroughtiron plate f are fastened to the side plates b b by screw-bolts d d. The back plate, a, is likewise protected'by a stratum ofasbestus, n, which is secured by a wrought-iron plate, ct. The space between the inner side plates, b b', and the outer side plates, b b, is filled with asbesvtus b2 b?, and the innerside plates, bb are made of less depth than the outer side plates, so as to form, when the front part is attached, a recess for the reception of the metal plate to be compounded with ungraded metal.

This mold, constructed as above described, is placed intoa sole-plate, B, consisting of a bottom plate, g,with upwardly-projecting back h and front lr, in which latter a set-screw, Z, is arranged to secure the moldA firmly to this soleplate B. Upon the bottom plate, g, a stratum of asbestus, w, is placed. On top of this a castiron plate, c, is placed, upon which the moldA rests. The stratum of asbestus w prevents the 5o radiation of the heat, and the cast-iron plate c. forming the true bottoni ofthe mold A, prevents the coagulation of that part of the metal first poured into the mold.

The arrangement of the wrought-iron plate f on the inside of the front plate, c, with the stratum of asbestus m between them, is for the purpose of preventing by the asbestus radiation of the heat toward the outside'of the box, and by means of the wrought-iron plate to distribute the heat which the gold-metal plate 6o receives from the first part of the liquid metal poured i'nto the mold, on account ofWroughtiron being a better conductor than cast-iron. The stratu m of asbestus b2 bibetween the double sides and the stratum of asbestus n against the outside of the back plate, a, prevent theradiation of heat from the inside of the box.

Into the recess formed by the diminished depth of the inner side plates, b b', as above described, the high-graded metal plate Mto be 7o combined with ungraded metal is placed. To prevent the inpouring iiuid metal from falling on the top of the metal plate M, a bar, p, is placed upon the same,`having an upper surface slanting toward the inside of the mold. Upon the top of the mold Aa plate or cover,

'0, Figs. l, 5, is placed, of such a length as to leave suflicient span on each end to pour this fluid metal into the mold A at the same time. By this cover the admission of cold air into 8o the mold at the time the fluid is poured in at each end is prevented, and consequently the cooling of the metal plate M and the oxidation of the metal is also prevented.

This mold may likewise be used for casting 8 5 ingots of precious metal of one grade by making the sides b b of the same depth, dispensing thereby with the recess formed by the unequal depth of the side plates, as above described.

l. A mold, A, consisting of the back plate, e, covered by a stratum of asbestus, n, secured by a plate, a', the double sides b b', with asbestus b2 between them, the inner plates, b', being 95 of less depth than the outer side plates, b, and the front plate, c, with astratum ofasbestus, m, and -Wrought-iron plate f at its inner surface, substantially as and for the purpose described.

2. In combination with a mold, A, the soleroo plate B, consisting of a bottom plate, g, with bar p, having a slantingV upper surface placed upwardly-'projecting back and front plates, h 011 top of the metal plate, as and for the purk, and stratum of asbestus w, and castiron pose specified.

plate v upon the bottom plate, substantially ADOLPHUS JOHN' LUSTIG. 5 as and for the purpose set forth. Witnesses:

3. In combination with a mold for produci HENRY E. ROEDER,

l ing compound plates of precious metals, the l LOUIS KAHN. 

